Another Pentastar BITES THE DUST at 87k miles?! ('17 Pacifica: EATS COOLANT, P0303 Misfire)

Got called in to this shop to diagnose this 2017 Chrysler Pacifica that keeps coming back with MISFIRE CODES!! Ignition coils and spark plugs have recently been replaced, and the Pentastar V6 runs smoother than before. HOWEVER, it does shake pretty badly on a cold start, and P0303 sets consistently. Oh, and also apparently it EATS COOLANT about half a gallon a week! You can already tell where this is going... Let's efficiently check for a BLOWN HEAD GASKET and get some definitive PROOF that this Pentastar V6 needs some MAJOR REPAIRS. TOPDON Phoenix Plus: https://www.amazon.com/dp/B091BQNR3S?... TESLONG NTS500 Dual Lens Endoscope: https://www.amazon.com/dp/B07SQ4FLYX?... Enjoy! Ivan